[122] | 1 | #include "Selection.h" |
---|
| 2 | //#include "Genetic.h" |
---|
| 3 | #include <time.h> |
---|
| 4 | #include <stdlib.h> |
---|
| 5 | #include <stdio.h> |
---|
| 6 | |
---|
| 7 | #define USED 1 |
---|
| 8 | #define UNUSED 0 |
---|
| 9 | |
---|
| 10 | #define DEBUG 0 |
---|
| 11 | |
---|
| 12 | #define TOUR 3 |
---|
| 13 | |
---|
| 14 | /** |
---|
| 15 | * the constructor |
---|
| 16 | * |
---|
| 17 | * @param c the number of chromosomes we want to select |
---|
| 18 | */ |
---|
| 19 | Selection::Selection(int c) |
---|
| 20 | { |
---|
| 21 | count = c; |
---|
| 22 | } |
---|
| 23 | |
---|
| 24 | /** |
---|
| 25 | * method that realizes the turnament selection |
---|
| 26 | * |
---|
| 27 | * @param chs the initial list of chromosomes |
---|
| 28 | * @param nou the final list of chromosomes (contains the selected chromosomes) |
---|
| 29 | */ |
---|
| 30 | void Selection::turnamentSelection(vector<Chromosome> chs, vector<Chromosome> & nou) |
---|
| 31 | { |
---|
| 32 | //srand(time(NULL)); |
---|
| 33 | int max_fitness = -1,max_poz = -1; |
---|
| 34 | int poz ; |
---|
| 35 | int * uz_gen = (int *) calloc(chs.size(), sizeof(int)); |
---|
| 36 | int * uz_crt = (int *)calloc(chs.size(), sizeof(int)); |
---|
| 37 | //for each chromosome I have to select |
---|
| 38 | for(int i = 0 ; i < count ; i ++) |
---|
| 39 | { |
---|
| 40 | //selecting TOUR individuals |
---|
| 41 | for(int j = 0 ; j < TOUR; ) |
---|
| 42 | { |
---|
| 43 | poz = rand() % chs.size(); |
---|
| 44 | if(uz_gen[poz] == UNUSED && uz_crt[poz] == UNUSED) |
---|
| 45 | { |
---|
| 46 | if(chs[poz].fitness > max_fitness) |
---|
| 47 | { |
---|
| 48 | max_fitness = chs[poz].fitness; |
---|
| 49 | max_poz = poz; |
---|
| 50 | } |
---|
| 51 | uz_crt[poz] = USED; |
---|
| 52 | j++; |
---|
| 53 | } |
---|
| 54 | } |
---|
| 55 | //select the best |
---|
| 56 | nou.push_back(chs[max_poz]); |
---|
| 57 | uz_gen[max_poz] = USED; |
---|
| 58 | |
---|
| 59 | /* printf("poz = %i\n", max_poz); |
---|
| 60 | printf("partial "); |
---|
| 61 | for(int j = 0 ; j < (int)chs.size() ; j ++) |
---|
| 62 | printf("%i ", uz_crt[j]); |
---|
| 63 | printf("\ngeneral "); |
---|
| 64 | */ if( i == count - 1 && DEBUG == 1 ) |
---|
| 65 | { |
---|
| 66 | for(int j = 0 ; j < (int)chs.size() ; j ++) |
---|
| 67 | printf("%i ", uz_gen[j]); |
---|
| 68 | printf("\n"); |
---|
| 69 | } |
---|
| 70 | |
---|
| 71 | for(int j = 0 ; j < (int)chs.size() ; j ++) |
---|
| 72 | uz_crt[j] = UNUSED; |
---|
| 73 | max_poz = -1; |
---|
| 74 | max_fitness = -1; |
---|
| 75 | } |
---|
| 76 | } |
---|